Top 50 Key Players companies in Parapet by Highest Patent Value in the Japan in 2021 – Discovery

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The Parapet top 50 is Discovery PatSnap’ annual ranking of the top 50 Highest Patent Value Parapet Key Players in the Japan. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2021, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.

A parapet is a barrier which is an extension of the wall at the edge of a roof, terrace, balcony, walkway or other structure. The word comes ultimately from the Italian parapetto (parare "to cover/defend" and petto "breast"). The German equivalent Brüstung has the same meaning. Where extending above a roof, a parapet may simply be the portion of an exterior wall that continues above the edge line of the roof surface, or may be a continuation of a vertical feature beneath the roof such as a fire wall or party wall. Parapets were originally used to defend buildings from military attack, but today they are primarily used as guard rails and to prevent the spread of fires. In the Bible the Hebrews are obligated to build a parapet on the roof of their houses to prevent people falling .

1	AOI Co., Ltd.	Tokyo, Japan	Unisex	Avg patent value: 500,000
2	Hitachi Ltd.	Tokyo, Japan	Elevator,Electrical equipment,Electric motor, ...[+2]	Avg patent value: 243,400
3	HASEKO Corp.	Chiba, Japan	Real estate development,Civil engineering,Construction engineering	Avg patent value: 58,000
4	Naka Corp.	Tokyo, Japan	Handrail,Metal	Avg patent value: 56,500
5	Tanaka Kogyo KK	Chiba, Japan	Automation,Manufacturing engineering,Industrial engineering, ...[+2]	Avg patent value: 56,500
6	Mitsubishi Electric Engineering Co., Ltd.	Tokyo, Japan		Avg patent value: 52,000
7	Sumitomo Forestry Co., Ltd.	Tokyo, Japan	Forestry,Forest product,Reforestation, ...[+2]	Avg patent value: 51,000
8	Asahi Kasei Homes Corp.	Tokyo, Japan	Construction engineering	Avg patent value: 50,460
9	Lonseal Corp.	Tokyo, Japan	Synthetic resin,Plastics engineering,Synthetic rubber	Avg patent value: 47,500
10	Fujita Corp.	Tokyo, Japan	Land utilization,Demolition,Construction engineering, ...[+2]	Avg patent value: 46,000
11	Nihon Biso KK	Japan		Avg patent value: 46,000
12	LIXIL Corp. /Old/	Tokyo, Japan	Construction engineering,Materials science	Avg patent value: 45,000
13	Toda Kensetsu KK	Japan		Avg patent value: 45,000
14	Shimizu Kensetsu KK	Ibaraki, Japan		Avg patent value: 44,666
15	Toshiba Elevator Corp.	Japan		Avg patent value: 44,000
16	Mitsubishi Electric Building Techno-Service Co., Ltd.	Tokyo, Japan	Elevator	Avg patent value: 43,000
17	Nichiha Corp.	Aichi, Japan	Building material,Fiber,Metal, ...[+2]	Avg patent value: 42,000
18	Nippon Light Metal Co., Ltd.	Tokyo, Japan	Metal,Precious metal,Mining engineering, ...[+2]	Avg patent value: 42,000
19	West Nippon Expressway Co., Ltd.	Osaka, Japan	Construction engineering	Avg patent value: 42,000
20	Yokogawa Bridge Corp.	Chiba, Japan	Real estate development	Avg patent value: 42,000
21	Takamiya Co., Ltd.	Osaka, Japan	Formwork,Renting,Construction engineering, ...[+1]	Avg patent value: 41,000
22	JFE Holdings, Inc.	Tokyo, Japan	Materials science,Product design,Carbon steel, ...[+2]	Avg patent value: 40,000
23	JFE Steel Corp.	Tokyo, Japan	Irone,Mining engineering,Natural resource management, ...[+2]	Avg patent value: 40,000
24	Asahi Engineering Co., Ltd.	Kanagawa, Japan	Construction engineering,Civil engineering,Mechanical engineering, ...[+1]	Avg patent value: 40,000
25	Asahi Kasei Engineering Corp.	Tokyo, Japan	Construction engineering	Avg patent value: 40,000
26	East Nippon Expressway Co., Ltd.	Tokyo, Japan	Terminal operation,Construction engineering,Parking lot	Avg patent value: 39,333
27	Kajima Corp.	Tokyo, Japan	Civil engineering,Construction engineering,Real estate development, ...[+2]	Avg patent value: 39,000
28	Penta-Ocean Construction Co., Ltd.	Yamanashi, Japan	Civil engineering,Construction engineering,Silicone, ...[+2]	Avg patent value: 39,000
29	Nishikawa Rubber Co., Ltd.	Hiroshima, Japan	Civil engineering,Plastics engineering,Automotive engineering, ...[+2]	Avg patent value: 39,000
30	Central Nippon Expressway Co. Ltd.	Aichi, Japan	Asset management,Construction engineering	Avg patent value: 39,000
31	Nippon Engineering Consultants Co., Ltd.	Tokyo, Japan	Construction engineering,Erosion control	Avg patent value: 39,000
32	Sho-Bond Corp.	Tokyo, Japan	Civil engineering,Construction engineering	Avg patent value: 39,000
33	Tokyo Fabric Industry Co., Ltd.	Tokyo, Japan		Avg patent value: 39,000
34	Sankyo Aluminum Industry Co., Ltd.	Toyama, Japan	Metal,Natural resource management,Mining engineering	Avg patent value: 38,000
35	Sunsei	Tokyo, Japan	Web development	Avg patent value: 38,000
36	Sunsei	Shizuoka, Japan	Software design,Software,Information technology consulting	Avg patent value: 38,000
37	Fujitec Co., Ltd.	Tokyo, Japan	Elevator,Counterweight,Dumbwaiter, ...[+2]	Avg patent value: 37,000
38	Oiles Corp.	Kanagawa, Japan	Manufacturing engineering,Industrial engineering,Ultra-high-molecular-weight polyethylene, ...[+2]	Avg patent value: 37,000
39	Nisshin Kogyo KK	Tokyo, Japan	Construction engineering	Avg patent value: 36,500
40	Kyowa Concrete Industry Co., Ltd.	Hokkaido, Japan	Construction engineering,Materials science,Erosion, ...[+2]	Avg patent value: 36,000
41	Sugiko Co. Ltd.	Japan		Avg patent value: 36,000
42	Saitama Murata Manufacturing Co., Ltd.	Saitama, Japan	Semiconductor,Electronic component,Telecommunications equipment, ...[+2]	Avg patent value: 34,500
43	Sumitomo Mitsui Construction Co., Ltd.	Tokyo, Japan	Civil engineering,Construction engineering,Facility management	Avg patent value: 34,000
44	JFE Engineering Corp.	Tokyo, Japan	Environmental protection,Renewable energy,Health care, ...[+2]	Avg patent value: 34,000
45	KURABO INDUSTRIES LTD.	Osaka, Japan	Textile,Textile (markup language),Vacuum insulated panel, ...[+2]	Avg patent value: 33,000
46	KMEW Co., Ltd.	Osaka, Japan	Building material	Avg patent value: 33,000
47	Sekisui House, Ltd.	Osaka, Japan	Real estate development,Residential land,Urban area, ...[+2]	Avg patent value: 31,200
48	Toyota Housing Corp.	Aichi, Japan	Real estate development	Avg patent value: 30,000
49	Taishin Sangyo Co. Ltd.	Japan		Avg patent value: 29,500
50	Sekisui Chemical Co., Ltd.	Osaka, Japan	Synthetic rubber,Industrial engineering,Polyvinyl chloride, ...[+2]	Avg patent value: 28,630